| 摘要 |
PROBLEM TO BE SOLVED: To provide a method and device for measuring furnace bottom temperature capable of broadly measuring the temperature on the surface of the furnace bottom, and a method and device for monitoring the bottom of a melting furnace capable of detecting abnormality of the furnace bottom based on the measured temperature. SOLUTION: A thermography device 30 is installed at a position including the surface of the bottom 17 of the melting furnace 10 within a measuring range, a black body 31 of which emissivity is set 1.0 or approximate to this is disposed near an arbitrary temperature measurement point 32 included in the measuring range. A reference emissivity is previously set at 1.0 or an approximate value to this, black body temperature is measured based on the radiant energy of the black body 31 by the thermography device 30. Emissivity where measuring point temperature measured based on the radiant energy of the measuring point by the thermography device substantially matches with the black body temperature is determined, the determined emissivity is set as emissivity in the measuring range, and the temperature distribution of the measuring range is measured by the thermography device. COPYRIGHT: (C)2007,JPO&INPIT
|
